ALSA: usb-audio: Avoid unnecessary interface change at EP close
authorTakashi Iwai <tiwai@suse.de>
Sun, 9 Oct 2022 10:42:09 +0000 (12:42 +0200)
committerTakashi Iwai <tiwai@suse.de>
Sun, 9 Oct 2022 10:43:24 +0000 (12:43 +0200)
commit9902b303b5ade208b58f0dd38a09831813582211
treeb74c15b89dc278f2d747c186ed21dee62ad910d2
parent556a11a082ee208455ed42e7c460849cc3dbd68c
ALSA: usb-audio: Avoid unnecessary interface change at EP close

We toggle USB interface at PCM prepare and reset at close.  When the
PCM isn't prepared, resetting again makes little sense.
Check the current altset and avoid unnecessary interface reset at EP
close.

Link: https://lore.kernel.org/r/20221009104212.18877-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/usb/endpoint.c